UnionSpecial 39500FS, Instructions For Adjusting And Operating

Page 1: ...LLC FINEST QUALITY STYLES 39500FS 39500FT 39500FU 39S00GD 39500GL 39500GT 39500JP 39500MM CATALOG No 103FS SECOND EDITION LEWIS COLUMBIA CLASS 39500 HI STYLED INDUSTRIAL SEWING MACHINES HIGH SPEED OVERSEAMERS WITH INTERMITTENT DIFFERENTIAL FEED CHICAGO ...

Page 2: ...obtainable No 2 may be used UNION SPECIAL SPECIFICATION NO 174 175 87 V iscosity S S U at 100 F 90 125 90 125 300 350 Flash Min 350 350 350 Pour Max 20 20 20 Color A S T M Max 3 1 3 Neutralization No Max 0 10 0 10 0 10 Viscosity Index D D Min 85 85 85 Compounding None None None Copper Corrosion Max lA lA lA An line No 175 225 175 225 175 225 Used with Buna N Rubber O Retainers NOTE 1 The use of no...

Page 3: ...IONS FOR ADJUSTING AND OPERATING LIST OF PARTS Class 39500 39500 FS 39500 FT 39500 FU 39500 GD Styles 39500 GL 39500 GT 39500 JP 39500 MM Second Edition Copyright 1967 By Union Special Corporation Rights Reserved in All Countries CORPORATION INDUSTRIAL SEWING MACHINES CHICAGO Printed in U S A 3 ...

Page 4: ...th of seam 1 8 inch 3 17 mm Stitch range 8 20 per inch Cam adjusted main and differential feeds Maximum recommended speed 6000 R P M 39500 FT Single needle three thread medium to heavy duty machine for seaming and intermittently gathering or shirring on woven and knit materials such as dresses aprons lingerie smocks nightgowns and similar garments Knee press controlled _ tandem intermittent iffere...

Page 5: ...cs where long straight seams are necessary Thumbscrew feed which allows either re versed or forward differential feeding Seam specification 504 SSa 1 Standard width of seams 3 32 and 1 8 inch 2 38 and 3 17 mm Stitch range 8 30 per inch Cam adjusted main and differential feeds Maximum recommended speed 6000 R P M 39500 MM Single needle three thread medium to heavy duty machine for seaming and inter...

Page 6: ...a good stitch formation Success in the operation of Union Special machinee can be secured only by use of needles packaged under our brand name which is backed by a re putation for producing highest quality needles in materials and workmanship for more than three quarters of a century CHANGING NEEDLES Release pressure on presser foot by turning presser foot release bushing AG Fig 1 and lA and swing...

Page 7: ...d O Tension Discs l3Tension Post Slot IITension Disc Felt iTension Thread Guide FIJFront Thread Guide IIJupper Looper Thread Eyelet IiiAuxiliary Looper Thread Eyelet 9Lower Looper Thread Eyelet DFrame Looper Thread Guide DJPresser Arm Fig 1 l Thread Eyelet 7 Top Cover Needle Thread Eyelet Upper Looper Thread Tube Assembly mLower Looper ...

Page 8: ...isc Felt iTension Thread Guidt f I Front Thread Guide IIUpper Looper Thread Eyelet IiiAuxiliary Looper Thread Eyelet i9Lower Looper Thread Eyelet ilFabric Guard Bracket D Frame Looper Thread Guide m Presser Arm Fig lA Thread Eyelet 8 i I I I I I I I I I Top Cover lllli Needle Thread Eyelet Upper Looper Thread Tube Aasembly Upper Looper mLower Looper ...

Page 9: ...dwheel in operating direction until needle X is in high position release pressure on presser foot by turning presser foot release bushing AG and swing presser arm U out of posi tion Be sure the threads as they come from the tension thread guide C are be tween the tension discs J and in tension post slot K in tension post G The tens ion posts should be positioned so the tension post slot will be at...

Page 10: ...D against locking nut C FEED ECCENTRICS Fig 2 Feed eccentrics used in Style 39500 FS machines have been selected to produce approximately 14 stitches per inch It will be noted that the part number of main feed eccentric is No 39540 B 14 while that of the differential feed eccentric is No 39540 B 4 Minor numbers of the part symbol indicate approximately the number of stitches obtainable when using ...

Page 11: ...per at left end of its stroke set looper point 1 16 inch 1 59 mm from center of left needle using looper gauge No 21225 1 16 Do not have lower looper deflecting needle Tighten nut C Now assemble differential front feed dog SETTING THE REAR NEEDLE GUARD Fig 5 Set rear needle guard A Fig 6 as high as possible with out interfering with either lower looper or movement of lower knife holder but still i...

Page 12: ...o cross lower looper to the left of the lower looper eye with 002 to 004 inch 051 to 102 mm clearance Fig 9 As the upper looper moves toward the top of its stroke the heel of the upper looper should pass behind the lower looper head with 1 64 to 1 32 inch 40 to 79 mm clearance Next turn handwheel until looper is at the left end of its travel check dimensions ofupper looper point with respectto nee...

Page 13: ...t teeth rise about 3 64 inch 1 19mm above throat plate The differential feed may be set slightly higher if desired NOTE On Style 39500 JP set the chaining feed dog level with the top ofthroat plate when feed is at the top of its travel SETTING THE LOWER KNIFE Replace lower knife holder assembly Lower knife Fi g 13 A Fig 13 should be set with cutting edge flush with throat plate surface Adjustments...

Page 14: ...ut C and washer 0 and tighten securely To change feed eccentric remove thrust finger L from its seat on the main frame M Remove nut C and washer D from end of shaft G Remove nut H from stud J Link K and eccentric A will now slip off Fig 15 Using hooked eccentric extractor E supplied with machine reach behind eccentric B as shown and withdraw eccentric It may be necessaryto move handwheel back and ...

Page 15: ...w located on the bed in back of the tension post assembly Turning this rod clockwise decreases the amount of differential and turning it counter clockwise increases the amount of differential The amount of intermittent differential feed is set by turning the differential feed control adjusting rod it is the smaller knurled head screw located just above the plain feed control adjusting rod Turning ...

Page 16: ...s D which hold the hold down plate in position and move the plate down until it rests firmly against the presser foot Tighten the two screws and remove the shim NOTE Always be sure the feed dogs are below sur face of throat plate when making this setting Fig 17 SETTING THE PRESSURE PLATE ASSEMBLY FOR STYLES 39500 FT FU GD GL GT and MM 1 Swing the pressure plate assembly in and out of its operating...

Page 17: ...ely 005 to 010 inch 127 to 254 mm clearance See Fig 19 between operating lever and shaft bracket E Fig 18 9 With feed dogs up check from the left side to see if the clearance between the pressure plate and the presser foot is wide enough to allow the largest seam pass If not adjustment can be made by loosening screws E Fig 19 and moving the mounting bracket B straight toward the operator Retighten...

Page 18: ...hread eyelet R down keeping the same amount of pull off action UPPER LOOPER THREAD CONTROL Before proceeding to adjust upper looper thread eyelet N Fig 1 or lA bal ance all three or four tensions to give a normal appearing stitch Moderate change in these tensions will not markedly affect the purl During needle down stroke forward stroke of looper thread pull off AF will draw upper looper thread th...

Page 19: ...om edge of base 2 Remove top and bottom covers of machine 3 Remove feed eccentric nut A Fig 20 and washer B and with the aid of the eccentric extractor slip off the eccentrics C 4 Remove key D 5 Remove three counterweights E Identify these counterweights so that they will be re assembled in the proper places 6 Remove screw F which holds crankshaft split bearing This screw is reached through bottom...

Page 20: ...lar remove both halves of cooling fan 11 Remove screw N take off pulley cap P 12 Loosen two screws R remove pulley S 13 Remove three screws T take off bearing retaining plate U also spacer collars V and W may be removed at this time 14 Crankshaft may now be removed 15 If necessary to replace ball bearing X it should be pressed off shaft on an ar bor press In replacing bearing it must be pressed on...

Page 21: ...ts individually is not recom mended so complete sub assembly should be ordered At the back of the book will be found a numerical index of all the parts shown in this book This will facilitate locating the illustration and description when only the part number is known IDENTIFYING PARTS Where the construction permits each part is stamped with its part number On some of the smaller parts and on thos...

Page 22: ...From the library of Superior Sewing Machine Supply LLC 22 ...

Page 23: ...Assembly 1 Screw for thread tube tension spring 1 Thread Tube Tension Spring 1 Thread Tube 1 Magnetic Oil Drain Plug Screw 1 Presser Spring Plunger 7 1 Top Cover Needle Thread Eyelet for Styles 39500 FS FT FU GT JP MM 1 Top Cover Needle Thread Eyelet for Styles 39500 GD GL 1 Screw for top cover needle thread eyelet 2 Presser Spring 1 Lock Nut for presser spring plunger adjusting screw 1 Presser Sp...

Page 24: ...From the library of Superior Sewing Machine Supply LLC 24 ...

Page 25: ...1 Ring for crankshaft bearing inner right 1 Oil Slinger Collar 1 Screw for oil slinger collar 2 Crankshaft Split Bearing middle 1 Screw for crankshaft split bearing 2 Screw for crankshaft bearing inner right 1 Crankshaft Counterweight left 1 Screw for crankshaft counterweights 6 Screw for oil splasher 1 Oil Splasher 1 Crankshaft Counterweight middle 1 Stud for crankshaft split bearing 1 Crankshaft...

Page 26: ...From the library of Superior Sewing Machine Supply LLC a 11 74 26 ...

Page 27: ... 2 Ratchet Stop Spring for all Styles except 39500 JP 1 Differential F eed Control Adjusting Rod for all Styles except 39500 JP 1 Differential Feed Control Adjusting Rod for Style 39500 JP 1 P lain F eed Control Adjusting Rod for all Styles except 39500 JP 1 Differential Feed Control Mounting Bracket for all Styles except 39500 JP 1 Differential Feed Control Mounting Bracket for Style 39500 JP 1 P...

Page 28: ...From the library of Superior Sewing Machine Supply LLC 28 ...

Page 29: ...ck Screw for main feed dog Screw for differential feed bar guide block Main Feed Dog See Page 37 Main Feed Bar Amt Req 2 2 1 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 1 1 1 3 1 Screw for differential feed dog for all Styles except 39500 JP Screw for differential feed dog for Style 39500 JP Differential Feed Dog See Page 37 Screw for feed bar thrust washer Differential Feed Bar Thrust Washer Needle Driving...

Page 30: ...From the library of Superior Sewing Machine Supply LLC J 14 n 9 30 ...

Page 31: ... Joint Fork 1 Upper Looper Shaft Collar 1 Screw upper looper rock 2 Screw for upper looper drive lever shaft 1 Upper LoopeT Drive Lever Shaft 1 Spot Screw for upper looper drive lever shaft 1 Upper Looper Drive Lever 1 Clamp Collar for upper looper drive shaft __________ ____ 1 Screw for clamp collar 1 Thrust Washer for upper looper drive shaft 2 Upper Looper Connecting Rod 1 Screw for upper loope...

Page 32: ...From the library of Superior Sewing Machine Supply LLC 2 32 ...

Page 33: ... 39500 JP 1 Upper Knife Clamp 1 Upper Knife Chain Guard 1 Nut for upper knife clamp stud 1 Screw for lower knife clamp 1 Lower Knife Clamp 1 Lower Knife Clamp Spring 1 Lower Knife for all Styles except 395 00 JP 1 Lower Knife for Style 39500 JP 1 Lower Knife Holder 1 Lower Knife Holder Spring 1 Throat Plate See Page 37 1 Screw for throat plate 1 Needle Guard front for Styles 39500 FS FT F U GT JP ...

Page 34: ...From the library of Superior Sewing Machine Supply LLC 14 15 16 17 2 34 ...

Page 35: ... GD GL 1 Screw for presser foot hold down plate 2 Presser Foot Hold Down Plate for Styles 39500 FT FU GD GL GT MM 1 Presser Foot See Page 37 1 Nut for looper thread eyelet screw 2 Screw for looper thread eyelet mounting bracket 1 Looper Th read Eyelet Mounting Bracket 1 Upper Looper Thread Eyelet 1 Lower Looper Thread Eyelet 1 Screw for looper thread eyelets 2 Auxiliary Looper Thread Eyelet 1 Fram...

Page 36: ...From the library of Superior Sewing Machine Supply LLC 8 9 _ 2 36 ...

Page 37: ...s er F oot for Styles 395 00 FT MM 1 Screw for hinge spring and stitch tongue 1 Presse r Foot Hinge Spring 1 Presser F oot Stitch Tongue m a rked EC 1 Differential Feed Dog marked P 16 t p i for Style 39500 FU r i 7 1 Presser Foot for Style 395 00 FU SJ ff C _pl Jf Q _ p_ R _ _ t _ Co J _ t i __________ 1 Screw for hinge spring and stitch tongue 1 Presser Foot Hinge Spring 1 Presser Foot Stitch To...

Page 38: ...From the library of Superior Sewing Machine Supply LLC 8 38 ...

Page 39: ...FS FT F U GT JP MM 3 Pad for thread cone for Styl s 39500 1 FS FT F u GT JP MM 3 Thread Stand Complete for Styles 39500 GD GL 1 SpoolSeatSupport 1 Screw for spool seat support 2 Nut for lead eyelet ball split socket 1 Washer for lead eyelet ball split socket 1 Lead Eyelet Ball Split Socket 2 Thread Stand Base 1 Screw for thread stand base 1 Screw for lead eyelet ball split socket 1 Lead Eyelet Soc...

Page 40: ...21663 J 39 21664 39 21664 C 39 21665 39 22503 F 31 22513 29 22524 33 22528 29 22541 23 22541 A 29 22557 A 39 22557 E 27 22562 A 23 31 22564 G 31 22565 23 31 22565 B 27 22565 F 23 25 27 22565 H 31 22565 S 23 31 22566 B 35 22 569 23 22569 B 23 25 27 29 35 22569 C 23 27 29 33 22569 D 23 35 22569 G 29 22569 K 23 22571 E 23 22580 A 33 22585 A 33 22586 R 23 22587 J 33 22587 M 25 2258 8 A 33 22596 E 29 2...

Page 41: ... 39552 T 29 39552 U 25 39555 35 39555 A 35 39555 B 35 39555C 35 39555 D 35 39555 E 25 39555 F 35 39555 N 25 39556 A 23 39556 F 35 39556 H 35 39556 K 35 39557 23 39557 A 23 39557 B 23 39557 C 23 39557 E 23 39557 F 23 39563 F 23 39563 G 29 39563 H 35 39563 w 23 39568 A 29 39568 B 35 39568 D 35 39568 E 35 39568G 23 39568 J 23 39568 L 35 39568 R 35 39568 Y 29 39570 33 39570 J 33 39571 B 33 39571 C 33 ...

Page 42: ...No 260 Work Gloves No 262 Cotton Burlap Jute and Multiwall Paper Bags No 263 Men s Clothing No 264 Men s Women s Children s Jackets No 265 Women s Wear No 266 Women s Wear And High Fashion No 267 Corsets Girdles Brassieres No 268 Children s Wear No 269 Mattresses Slip Covers Furniture Upholstery Nci 271 Awnings Canopies T nts Tarps No 273 Curtains Drapes No 610 Klipp it No 710 MCS ForMation Unit N...

Page 43: ...mi nates defect ve garments caused by dull knives PNEUMATIC FOOT LIFTER The air operated foot lifter for use on Class 39500 machines allows the operator to rai se l he loot simply by knee touching an actuat ing switch CHAIN CUTTER The above photo shows t he small pneumatic chain cu tter that is available for installation as an accessory unit on Class 36200 Flatseamers Style 2899A 6 HEAT DISPELLER ...

Page 44: ...rvice men are fac tory trained and are able to serve your needs promptly and efficiently Whatever your loca tion there is a Union Special Representative to serve you Check with him today ATLANTA GA BOSTON MASS CHICAGO ILL DALLAS TEXAS L OS ANGELES CAL NEW YORK N Y PHILADELPHIA PA MONTREAL CANADA TORONTO CANADA BRUSSELS BELGIUM LEICESTER ENGLAND LONDON ENGLAND PARIS FRANCE STUTTGART GERMANY Re pres...